A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. This issue is fixed in macOS Big Sur 11.0.1, iOS 14.0 and iPadOS 14.0. A malicious application may be able to determine a user's open tabs in Safari.
Published 2020-12-08 20:15:18
Updated 2023-01-09 16:41:59
Source Apple Inc.
View at NVD,   CVE.org
Vulnerability category: Input validation

Products affected by CVE-2020-9977

Exploit prediction scoring system (EPSS) score for CVE-2020-9977

0.12%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 47 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-9977

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
MEDIUM AV:N/AC:M/Au:N/C:P/I:N/A:N
8.6
2.9
NIST
5.5
MEDIUM CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
1.8
3.6
NIST

CWE ids for CVE-2020-9977

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-9977

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